南方科技大学知识苑(SUSTech KC): 集流体及其制备方法、电极及其制备方法

Title	集流体及其制备方法、电极及其制备方法
Alternative Title	Current collector, preparation method of current collector, electrode and preparation method of electrode
Author	程春; 牛树章; 王信; 张启程
First Inventor	程春
Original applicant	南方科技大学
First applicant	南方科技大学
Address of First applicant	518000 广东省深圳市南山区桃源街道学苑大道1088号
Current applicant	南方科技大学
Address of Current applicant	518000 广东省深圳市南山区桃源街道学苑大道1088号 (广东,深圳,南山区)
First Current Applicant	南方科技大学
Address of First Current Applicant	518000 广东省深圳市南山区桃源街道学苑大道1088号 (广东,深圳,南山区)
Application Number	CN202210386108.3
Application Date	2022-04-13
Open (Notice) Number	CN114883573A
Date Available	2022-08-09
Status of Patent	实质审查
Legal Date	2022-08-26
Subtype	发明申请
SUSTech Authorship	First
Abstract	本申请提供了集流体及其制备方法、电极及其制备方法，该集流体包括三维基体和包覆于三维基体表面的亲锂包覆层，三维基体为三维导电骨架，亲锂包覆层具有多个密布的纳米颗粒，纳米颗粒包覆在在三维基体的表面。采用亲锂包覆层修饰三维基体，可作为锂金属的宿主材料，亲锂包覆层可促进锂金属在集流体表面均匀成核、沉积，防止锂枝晶的生长，三维基体的分级结构可为锂金属提供沉积、嵌入的空间；相邻两个纳米颗粒之间具有间隙，与三维基体的分级结构一起为锂金属沉积或循环过程中的体积膨胀提供空间，有效缓解锂金属体积膨胀，从而提高锂金属电极的循环稳定性；集流体具有大比表面积，可有效分散电流密度，调控均匀的锂沉积。
Other Abstract	The invention provides a current collector and a preparation method thereof, and an electrode and a preparation method thereof, the current collector comprises a three-dimensional substrate and a lithium-loving coating layer coating the surface of the three-dimensional substrate, the three-dimensional substrate is a three-dimensional conductive skeleton, the lithium-loving coating layer has a plurality of densely distributed nanoparticles, and the nanoparticles coat the surface of the three-dimensional substrate. The lithium-loving coating layer is adopted to modify the three-dimensional substrate and can be used as a host material of lithium metal, the lithium-loving coating layer can promote uniform nucleation and deposition of the lithium metal on the surface of the current collector and prevent growth of lithium dendrites, and the hierarchical structure of the three-dimensional substrate can provide deposition and embedding space for the lithium metal; a gap is formed between every two adjacent nano-particles, and the nano-particles and the hierarchical structure of the three-dimensional substrate together provide a space for volume expansion in the lithium metal deposition or circulation process, so that the volume expansion of the lithium metal is effectively relieved, and the circulation stability of the lithium metal electrode is improved; the current collector has a large specific surface area and can effectively disperse current density and regulate and control uniform lithium deposition.
CPC Classification Number	H01M4/667 ; H01M4/663 ; H01M4/78 ; H01M4/134 ; H01M4/1395 ; H01M4/0452 ; H01M4/0404 ; H01M4/80 ; H01M10/052 ; H01M10/4235 ; H01M4/664 ; Y02P70/50
IPC Classification Number	H01M4/66 ; H01M4/78 ; H01M4/80 ; H01M4/134 ; H01M4/1395 ; H01M10/052 ; H01M10/42
INPADOC Legal Status	（ENTRY INTO FORCE OF REQUEST FOR SUBSTANTIVE EXAMINATION）[2022-08-26][CN]
INPADOC Patent Family Count	1
Extended Patent Family Count	1
Priority date	2022-04-13
Patent Agent	曹柳
Agency	深圳中一联合知识产权代理有限公司
URL	[Source Record]
Data Source	PatSnap
Document Type	Patent
Identifier	http://kc.sustech.edu.cn/handle/2SGJ60CL/534101
Department	Department of Materials Science and Engineering 工学院_生物医学工程系
Recommended Citation GB/T 7714	程春,牛树章,王信,等. 集流体及其制备方法、电极及其制备方法.

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